Season 1 revolves around a studious Dolly and her crush on Ritesh, and she has adventures with her best friend Parminder, nicknamed Pam. Sunny frequently challenges the nosy neighbour Roli Aunty, while Rohan and his best friend Popi work on their band and try to impress girls. Himani has just returned to work after a maternity break, and Avatar is busy with his electronics business.
Dolly moves her study date with a cute boy, Ritesh, from the library to home because she has to help Avatar take care of Nikki while Himani returns to work. Avatar injures himself falling down the stairs, so Rohan must take him to the hospital where Himani works, leaving Dolly to watch Nikki.
Dolly encourages her parents to go out while the kids take care of the baby. Rohan flirts with a cute girl, Punam (Shivani Joshi), while minding Nikki--and accidentally brings the wrong baby home. After a failed search, the kids go to the restaurant to tell their parents--and find Nikki sitting with the cute girl's family a few tables over.
Dolly discovers that she has an Narendra Tauji (English: uncle her father doesn't speak of); she visits him and they go to a cricket game, where she realizes why they never got along. Sunny and Rohan try to make money modeling Nikki for a baby-store ad.
Himani pressures Dolly to be in the school play, "Dinku the Donkey", and she gets the part despite trying to blow the audition; a baby basketball match is set between Popi's nephew and Nikki.
Roli Aunty agrees to bring her dog inside if Avatar cuts down a tree, but Dolly and Rohan stage a sit-in to save their childhood tree-house. Avatar wages war against his disobedient kids while Himani gives them her support.
Dolly is annoyed that her best friend Pam has become “texting buddies” with Himani, so she attempts to bond with Pam’s boring mother. Sunny and Rohan mistakenly believe that Roli aunty has killed her husband, so they go to Roli aunty's house to investigate.
Nikki sets off a shoplifting alarm at a drugstore, and she, Sunny, and Nikki are put in holding. Neeti, an awkward girl from Dolly's school, works there and aids their escape. Rohan and Popi create a jingle for an Avatar Bijlee commercial.
Dolly asks Ritesh to the school dance on a double date with Pam and Popi. The boys start a "dance-off" over Dolly, but end up bonding, leaving Dolly feeling left out. Sunny tries to get Himani and Avatar to fight at his PTA meeting to maintain his excuse for not doing homework.
Rohan delivers food for Kukkad Nukkad (a chicken restaurant) and falls for a customer, Richa, who he obsesses over, causing friction with Popi. Avatar used to date Richa's mom, which causes trouble with Himani. Dolly tries to help Sunny with a school bully, Guri, who is actually a girl with a crush on him.
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Dolly cat-sits for Roli Aunty, whose sister enlists a cat therapist to cheer up the pet. Sunny tells a girl he likes that he's an only child living with his single mother (to have things in common with her) and enlists Dolly to help him maintain the facade when she shows up at their busy home.
Dolly tries to impress her Hindi teacher by bringing Nikki to class in costumes for a presentation, but Nikki vomits on the teacher and makes the class sick as well. Himani stands in for Avatar as Sunny's football coach, and they win their first game ever; the team hires her but her "have fun" approach doesn't work as well the next game. Meanwhile, Rohan takes Nikki to Nani ghar[HOME] and bonds with the Nani moms.
The kids throw a surprise anniversary dinner for their parents, but Nikki loses her blanket and won't stop crying. Chaos ensues as Rohan gets locked out of the house with Nikki inside. Meanwhile, Sunny takes Avatar and Himani to the movies, but Himani gets stuck watching "Robot No. 1", a movie she hates.
Rohan makes a viral video of Nikki farting which attracts the local news where Himani seizes the spotlight and Avatar tries to promote his business. Dolly meets Ritesh's parents and loves their tidy, quiet house, while in contrast they see the chaotic Farty Nikki newscast.
After agreeing to do a routine for the community talent show, Ritesh sees how bad a dancer Dolly is and fakes an injury. Popi abandons a ventriloquist act with Rohan to partner with Dolly, resulting in chaos at the show. Guri convinces Sunny she wants to help him run for class monitor, but instead smears him to bolster her own campaign.
Dolly becomes the new spokesmodel for Kukkad Nukkad, which seems like the perfect job until she realizes how much Rohan wanted the role. Avatar endeavors to capture a mouse and Sunny tries to prank him. Himani takes Nikki to a Music and Me class and gets over-competitive with another mother.
Dolly worries about her relationship with Ritesh after Nikki bites his finger; later, Dolly discovers him with another girl, Maya; when he lies about it, she dumps him. Sunny tricks Rohan into an unfavorable contract for money to buy an old used car. To teach him a lesson, Himani, Avatar, and Rohan try to convince him that the car is haunted.
Dolly flatters Himani as a "cool mom" so she can attend a midnight movie with Pam, but she pocket-dials Himani, who overhears that it was an act. Himani and Pam's mom get revenge by publicly embarrassing the girls. Rohan pocket-dials his intimidating lab partner Sandy, who overhears how stupid Rohan thinks he is. Sunny and Avatar assemble Sunny's new toy helicopter while Sunny is driven crazy by Nikki's new toy "Bak Bak Bandar".
Recovering from her breakup, Dolly befriends Maya, and with Pam they make a music video about Ritesh, but when he stops by to apologize, Dolly decides to not upload it. Rohan and Sunny clash over sharing a room, and Sunny decides to sneak into the room Roli Aunty has kept for her son. Himani joins a gym with free babysitting but spends her time at a spa.
Kaustubh, a mature 11-year-old boy, arrives in the neighborhood and convinces Dolly to be his date to a cousin's birthday party. When she learns that Ritesh has a new girlfriend, Sheena, Dolly says she is also dating but is caught out. Rohan and Popi add a third member to their band; when Nikki gets him sick, Avatar steps in to perform but takes his role too far.
A psychic tells Dolly that she will become a film star during her family's vacation and she starts to believe it. Himani and Avatar discover that they were never officially married (the judge was a fraud), but Avatar doesn't want to abandon their planned ski holiday to correct the mistake. Rohan tumbles down a hill to a cabin with two beautiful teenage girls, which seems like heaven until their seven-foot dad arrives.
Dolly is desperate to audition for a movie's heroine; she ends up stuck with Popi who is part of the film unit. Sunny and Rohan enter a tango competition to make money. Avatar tries to make up with Himani by planning a surprise wedding.
Sunny and Guri must babysit Nikki while completing a school project. Dolly tricks a fearful Rohan into going to the dentist, but breaks her tooth in the process and is drooling and swollen for her school debate. Avatar tries to surprise Himani with a day spa but needs her help on an emergency extermination call.
When Nikki develops a habit of pushing buttons, Sunny blames her for leaving the garage door open and the theft of his bicycle. For film class, Dolly chooses to reenact her parents telling her they were expecting a baby. Himani gets involved and overdoes it. Popi's new girlfriend seems to be hitting on Rohan, but she has an identical twin.
Dolly prepares to audition for the school play but Nikki draws in ink all over her face. Nikki refuses to sleep in her first "big girl" bed. Sunny has his first sleepover in a backyard tent, under which the lawn sprinklers go off. Rohan eats too much bacon and has nightmares of becoming fat.
Avatar won't take Dolly to practice driving, so she drives Roli Aunty around. They run out of gas, then get stuck in the mud, so Dolly comes home a mess and walks into a surprise 17th-birthday party. Sunny brings home a huge dog that Himani doesn't want in the house until she realizes it's gentle; later, she's heartbroken when the dog's rightful owner collects it.